One of the intervals of interest is the interval 60 to 80., Ask an Expert

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Suppose we have 10 exam scores for an introductory statistics course. The scores are 68, 88, 84, 99, 96, 77, 76, 80, 75, 68. One of the intervals of interest is the interval 60 to 80 (where a score of 60 is included in this interval, but 80 is not). Based on the given information, what is the relative frequency for the interval 60 to 80 in this particular class?

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